CN216256998U - Bending control mechanism, handle assembly, endoscope and endoscope system - Google Patents
Bending control mechanism, handle assembly, endoscope and endoscope system Download PDFInfo
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- CN216256998U CN216256998U CN202122626266.5U CN202122626266U CN216256998U CN 216256998 U CN216256998 U CN 216256998U CN 202122626266 U CN202122626266 U CN 202122626266U CN 216256998 U CN216256998 U CN 216256998U
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Abstract
The utility model provides a bending control mechanism, a handle assembly, an endoscope and a system, wherein the bending control mechanism is used for being connected with a handle of the endoscope and controlling the bending or straightening of an insertion part of the endoscope; the accuse curved mechanism includes: a base; the driving assembly is rotatably connected to the base and provided with at least one wire groove group, the wire groove group comprises a positioning groove and a threading channel which are mutually communicated, and the threading channel is used for threading a pull wire; the transmission assembly comprises at least one positioning part, the positioning part is accommodated in one positioning groove, and the positioning part is connected with the stay wire; the positioning part tightens or releases the pull wire along with the rotation of the driving assembly. The bending control mechanism is simple in structure and can effectively control the insertion part to complete preset bending operation.
Description
Technical Field
The utility model relates to the technical field of medical instruments, in particular to a bending control mechanism, a handle assembly, an endoscope and an endoscope system.
Background
Endoscopes are a common medical device that may be used for a variety of examination and surgical procedures. Functional minimally invasive surgery with medical endoscopes has gained widespread acceptance by physicians and patients compared to traditional surgical procedures. The medical endoscope can enter the human body along the natural holes of the human body or be provided with small holes when necessary so as to carry out minimally invasive operation.
The traditional endoscope operation is that a doctor controls an endoscope to a specified position manually through a handle, and then corresponding operation is carried out. Specifically, the existing endoscope includes a handle assembly and an insertion portion, the insertion portion is used for entering a human body and acquiring images by a segmented program module, the handle assembly is provided with a bending control mechanism, and the bending control mechanism is connected with the insertion portion through a pull wire and is used for controlling the front end of the insertion portion to bend and adjusting the shape of the insertion portion. It can be seen that the handle assembly is particularly important in endoscopes as an operation control portion. Current endoscope handle is mostly straight handle, inconvenient doctor's gripping, and accuse curved mechanism structure is complicated, and in order to hold functional unit such as accuse curved mechanism, the general size of handle is great, has further limited doctor's operation.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a bending control mechanism, a handle assembly, an endoscope and an endoscope system, so that the handle assembly can effectively control the bending of an insertion part of the endoscope.
In order to achieve the above object, the present invention provides a bending control mechanism, including:
a base;
the driving assembly is rotatably connected to the base and provided with at least one wire groove group, the wire groove group comprises a positioning groove and a threading channel which are mutually communicated, and the threading channel is used for threading a pull wire; and the number of the first and second groups,
the transmission assembly comprises at least one positioning part, the positioning part is accommodated in one positioning groove, and the positioning part is connected with the pull wire; the positioning part tightens or releases the pull wire along with the rotation of the driving assembly.
Optionally, the wire groove group comprises at least two positioning grooves which are arranged at intervals and communicated with each other through the threading channel; the positioning part is selectively arranged in one positioning groove.
Optionally, at least two of the detents are arranged about an axis of the drive assembly.
Optionally, two wire groove sets are arranged on the driving assembly, and the two wire groove sets are symmetrically arranged; the number of the positioning parts is two, and each positioning part is arranged in the positioning groove of one wire groove group.
Optionally, the driving assembly includes a central shaft and a turntable, the central shaft is rotatably connected to the base, the turntable is sleeved on the central shaft and configured to rotate synchronously with the central shaft, and the turntable is provided with the slot group.
Optionally, the bending control mechanism further comprises a housing, the housing is sleeved on the central shaft and covers the turntable; and a gasket is arranged between the housing and the turntable.
Optionally, the bending control mechanism further includes a limiting member; the limiting piece comprises a limiting sleeve and a limiting column, the limiting sleeve is connected to the outer surface of the housing in a sleeved mode and sleeved on the central shaft, and a limiting groove extending along the circumferential direction of the central shaft is formed in the limiting sleeve; the limiting column penetrates through the limiting groove and is detachably connected to the central shaft; the limiting column can rotate in the limiting groove along with the rotation of the central shaft.
Optionally, the limiting member further comprises an adjusting assembly comprising an adjusting plate and a first locking member; the number of the adjusting plates is two, each adjusting plate is provided with a limiting surface, and the limiting surfaces of the two adjusting plates are arranged oppositely; the first locking piece can selectively lock or unlock the adjusting plate and the cover shell, and when the first locking piece is unlocked, the angle formed by the two limiting surfaces can be adjusted.
Optionally, a threaded hole is formed in the housing, an arc-shaped adjusting groove is formed in the adjusting plate, and the adjusting groove extends along the circumferential direction of the central shaft; the first locking member includes a screw that passes through the adjustment slot and is threadedly coupled with the threaded bore.
Optionally, each of the adjustment plates is locked to the housing by at least two of the screws, and at least two of the screws are arranged around a circumference of the central shaft.
Optionally, a connecting hole is arranged on the positioning part, and the aperture of one end of the connecting hole is smaller than that of the other end; the pull wire comprises a pull wire body and a fixed sleeve arranged at the near end of the pull wire body, the fixed sleeve is arranged in the connecting hole, and the outer diameter of the fixed sleeve is larger than the aperture of one end of the connecting hole.
In order to achieve the above object, the present invention further provides a handle assembly, which includes a handle and the bending control mechanism as described in any one of the above, wherein the base is connected to the handle.
Optionally, the handle comprises a first part and a second part which are connected at an angle, the angle of the included angle formed between the first part and the second part is 90-150 °, and the base of the bending control mechanism is arranged at the joint of the first part and the second part.
To achieve the above object, the present invention also provides an endoscope comprising the handle assembly as described above and an insertion portion connected to a distal end of the handle, the pull wire being connected to the insertion portion.
To achieve the above object, the present invention also provides an endoscope system comprising the endoscope, the image processor, and the display as described above; the endoscope is communicatively coupled to the image processor, which is communicatively coupled to the display.
Compared with the prior art, the bending control mechanism, the handle assembly, the endoscope and the endoscope system have the following advantages:
the endoscope comprises a handle assembly and an insertion part, wherein the handle assembly comprises a handle and a bending control mechanism arranged on the handle, and the distal end of the handle is connected with the insertion part; the bending control mechanism comprises a base, a transmission assembly and a driving assembly; the base is used for being connected with the handle, the driving assembly is rotatably connected onto the base and is also rotatably connected with the handle, at least one wire groove group is arranged on the driving piece, the wire groove group comprises a positioning groove and a threading channel which are mutually communicated, and the threading channel is used for penetrating the pull wire and restricting the extension direction of the pull wire; the transmission assembly comprises a positioning part, the positioning part is accommodated in one positioning groove and is connected with the near end of a pull wire, and the far end of the pull wire can be used for being connected with the insertion part; when a user applies external force to the driving assembly to enable the driving assembly to rotate, the driving assembly drives the positioning portion to synchronously rotate so as to tighten the stay wire or release the stay wire, and then the inserting portion is controlled to be bent or straightened.
Furthermore, the wire groove group comprises at least two positioning grooves which are arranged at intervals and communicated through the threading channel, and the positioning part can be selectively arranged in one positioning groove by the structure, so that the positioning part can be accommodated in the proper positioning groove to pre-tighten the stay wire in the process of assembling or using the endoscope, the idle stroke problem of the stay wire is avoided, the bending control performance of the endoscope is ensured, the endoscope can complete the preset bending action, and the wire groove group also has the advantages of simplicity in operation and convenience.
Further, the handle comprises a first part and a second part which are connected in an angled manner, the included angle formed between the first part and the second part is 90-150 degrees so as to be convenient for a user to hold, and the base of the bending control mechanism is arranged at the joint of the first part and the second part, so that the handle assembly is more compact in structure and more convenient to operate.
Drawings
The drawings are included to provide a better understanding of the utility model and are not to be construed as unduly limiting the utility model. Wherein:
FIG. 1 is a schematic structural view of an endoscope provided in accordance with an embodiment of the present invention;
FIG. 2 is a schematic structural view of an endoscope according to an embodiment of the present invention, showing a handle;
FIG. 3 is a schematic structural view of a bending control mechanism of an endoscope according to an embodiment of the present invention, wherein a pull wire is not shown;
FIG. 4 is an enlarged schematic view of the bend-controlling mechanism of the endoscope shown in FIG. 3 at A;
FIG. 5 is a schematic view of the assembly of a pull wire and a positioning portion of an endoscope provided in accordance with an embodiment of the present invention;
FIG. 6 is a schematic view of a portion of a bend control mechanism of an endoscope in accordance with an embodiment of the present invention;
FIG. 7 is a partial schematic structural view of a bending control mechanism of an endoscope according to an embodiment of the present invention, in which the central angle of two adjacent positioning grooves is 30 °;
FIG. 8 is a schematic representation of the bend-controlling principle of an endoscope according to an embodiment of the present invention, the endoscope shown therein performing unidirectional bend-controlling;
FIG. 9 is a schematic representation of the bend-controlling principle of an endoscope according to an embodiment of the present invention, the endoscope shown therein performing bi-directional bend-controlling;
FIG. 10 is an enlarged schematic view at B of the endoscope shown in FIG. 9;
FIG. 11 is a partial schematic structural view of a bend control mechanism of an endoscope showing an adjustment assembly in accordance with an embodiment of the present invention.
[ reference numerals are described below ]:
10-handle, 11-first part, 12-second part;
20-an insertion section;
30-bending control mechanism, 1000-base, 2000-transmission component, 2000 a-first transmission component, 2000 b-second transmission component, 2100-positioning portion, 2100 a-first positioning portion, 2100 b-second positioning portion, 2110-connection hole, 2111-opening, 2200-pull wire, 2200 a-first pull wire, 2200 b-second pull wire, 2210-pull wire body, 2220-fixing sleeve, 3000-driving component, 3010-wire groove set, 3010 a-first wire groove set, 3010 b-second wire groove set, 3011-positioning groove, 3011 a-first positioning groove, 3011 b-second positioning groove, 3012-threading channel, 3012 a-first threading channel, 3012 b-second threading channel, 3110-second locking hole, 3200-center shaft, 3300-handle, 4100-housing, 4110-top plate, 4111-threaded hole, 4120-circumferential retaining wall, 5000-second limiting member, 5100-limiting sleeve, 5110-limiting groove, 5200-limiting column, 5300-adjusting component, 5310-adjusting plate, 5311-limiting surface, 5312-adjusting groove, 5320-first locking member
40-a connector;
50-guide mechanism, 51-guide hole.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The utility model is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the present embodiment are only for illustrating the basic idea of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the type, quantity and proportion of the components in actual implementation may be changed freely, and the layout of the components may be more complicated.
Furthermore, each of the embodiments described below has one or more technical features, and thus, the use of the technical features of any one embodiment does not necessarily mean that all of the technical features of any one embodiment are implemented at the same time or that only some or all of the technical features of different embodiments are implemented separately. In other words, those skilled in the art can selectively implement some or all of the features of any embodiment or combinations of some or all of the features of multiple embodiments according to the disclosure of the present invention and according to design specifications or implementation requirements, thereby increasing the flexibility in implementing the utility model.
As used in this specification, the singular forms "a", "an" and "the" include plural referents, and the plural forms "a plurality" includes more than two referents unless the content clearly dictates otherwise. As used in this specification, the term "or" is generally employed in its sense including "and/or" unless the content clearly dictates otherwise, and the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either fixedly connected, detachably connected, or integrally connected. Either mechanically or electrically. Either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
As used herein, the terms "proximal" and "distal" refer to the relative orientation, relative position, and orientation of elements or actions with respect to one another from the perspective of a clinician using the medical device, and although "proximal" and "distal" are not intended to be limiting, the term "proximal" generally refers to the end of the medical device that is closer to the clinician during normal operation, and the term "distal" generally refers to the end that is first introduced into a patient.
To further clarify the objects, advantages and features of the present invention, a more particular description of the utility model will be rendered by reference to the appended drawings. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention. The same or similar reference numbers in the drawings identify the same or similar elements.
Fig. 1 shows a schematic structural view of an endoscope provided according to an embodiment of the present invention, and as shown in fig. 1, the endoscope includes a handle 10, an insertion portion 20, and a bending control mechanism 30.
Wherein the handle 10 preferably comprises a first portion 11 and a second portion 12 connected at an angle, the angle α formed by the first portion 11 and the second portion 12 is 90 ° to 150 °. The handle 10 with the structure is convenient to hold, convenient for a doctor to operate and go in a microscope, small in size and convenient to carry.
The insertion portion 20 is preferably connected to the distal end of the handle 10 by a connecting member 40. The insertion portion 20 is used for insertion into the body of a patient for acquiring image information in the body. The structure of the insertion portion 20 can be referred to the prior art, and is not described in detail here.
One part of the bending control mechanism 30 is connected to the handle 10, and the other part is connected to the insertion portion 20 and is used for controlling the insertion portion 20 to bend or unbend so as to adjust the shape of the insertion portion 20 in the body. Referring to fig. 2 and 3, the structure of the bending control mechanism 30 includes a base 1000, a transmission assembly 2000 (as shown in fig. 5 and 6), and a driving assembly 3000. Wherein the base 1000 is disposed inside the handle 10 at the junction of the first portion 11 and the second portion 12, and is connected to the handle 10, so that the handle 10 and the bending control mechanism 30 are connected to each other in a more compact structure. The transmission assembly 2000 includes a positioning portion 2100, the positioning portion 2100 is connected to a proximal end of a pull wire 2200, and a distal end of the pull wire 2200 extends into the insertion portion 20 and is connected to the insertion portion 20. The driving assembly 3000 is rotatably connected to the base 1000, and the driving assembly 3000 is also rotatably connected to the handle 10 and partially located inside the handle 10. The driving assembly 3000 is provided with at least one wire slot set 3010, the wire slot set 3010 includes a positioning slot 3011 and a threading channel 3012 that are communicated with each other, the positioning slot 3011 is used to accommodate and limit the positioning portion 2100, the threading channel 3012 is used to thread the pull wire 2200 and restrict the extending direction of the pull wire 2200; the positioning portion 2100 is rotated along with the driving assembly 3000 to tighten or release the pull wire 2200, so that the pull wire drives the insertion portion to bend or unbend.
The number of the pull wires 2200 is not required in the present invention, and may be set according to actual needs. For example, as shown in fig. 8, only one pull wire 2200 is needed for unidirectional bending control, or as shown in fig. 9, two pull wires 2200 are needed for bidirectional bending control, and more pull wires 2200 (not shown) are needed for more directional bending control. When the pulling wire 2200 is two or more, the two or more pulling wires 2200 are disposed in the handle 10 and the insertion portion 20 without interfering with each other. In addition, as will be known to those skilled in the art, the number of the slot groups 3010 corresponds to the number of strands of the pull wire 2200, that is, each pull wire 2200 is connected to one of the positioning portions 2100, and each of the positioning portions 2100 is limited in the positioning slot 3011 of one of the slot groups 3010.
With continued reference to FIG. 8, in the initial state, the insertion portion 20 is in a straightened state, and when the driving member 3000 is acted upon by an external force along a first direction (as shown by arrow S in FIG. 8)1Shown) is rotated, the driving assembly 3000 drives the positioning portion 2100 to rotate synchronously, so as to tighten the pull wire 2200 and pull the insertion portion 20, so that the insertion portion 20 is bent along the first direction (as shown by arrow S in fig. 8)1' shown).
The bending control mechanism 30 is provided with two pulling wires 2200 and two positioning portions 2100, and the driving assembly 3000 is provided with two wire groove sets 3010. Taking fig. 6 and 9 as an example, for convenience of description, the two wire groove sets 3010 are respectively referred to as a first wire groove set 3010a and a second wire groove set 3010b, the first wire groove set 3010a includes a first positioning groove 3011a and a first threading channel 3012a, the second wire groove set 3010b includes a second positioning groove 3011b and a second threading channel 3012b, the two transmission assemblies 2000 are respectively a first transmission assembly 2000a and a second transmission assembly 2000b, the first transmission assembly 2000a includes a first positioning portion 2000a and a first pulling wire 2200a, and the second transmission assembly 2200b includes a second positioning portion 2100b and a second pulling wire 2200 b. The first positioning portion 2100a is disposed in the first positioning slot 3011a and connected to the insertion portion 20 by the first pulling wire 2200a, the first pulling wire 2200a is partially inserted into the first threading channel 3012a, the second positioning portion 2100b is disposed in the second positioning slot 3011b and connected to the insertion portion 20 by the second pulling wire 2200b, the second pulling wire 2200b is partially inserted into the second threading channel 3012b, and the first pulling wire 2200a and the second pulling wire 2200b are disposed such that: the direction of rotation of the driving assembly when releasing the first pulling wire 2200a is opposite to the direction of rotation of the driving assembly when releasing the second pulling wire 2200 b.
In the initial state, the insertion portion 20 is in a straightened state when the driving assembly 3000 is under the action of external force along a first direction (as shown by arrow S in fig. 9)1Shown), the driving assembly 3000 drives the first and second positioning portions 2100a and 2100b to rotate in the first direction, thereby tightening the first pull wire 2200a and releasing the second pull wire 2200b, so that the insertion portion 20 is bent in the first direction under the pulling of the first pull wire 2200a (as indicated by an arrow S in fig. 9)1' shown). Similarly, when the driving assembly 3000 is driven by an external force in a second direction (as shown by arrow S in fig. 9) opposite to the first direction2Shown in fig. 9), the driving assembly 3000 drives the first positioning portion 2100a and the second positioning portion 2100b to rotate along the second direction, so as to release the first pulling wire 2200a and tighten the second pulling wire 2200b, so that the second pulling wire 2200b of the insertion portion 20 is pulled to bend along the second direction (as indicated by an arrow S in fig. 9)2' shown).
Generally, with continued reference to fig. 2, 8 and 9 in conjunction with fig. 10, the endoscope further preferably includes a guide mechanism 50, wherein the guide mechanism 50 is disposed inside the handle 10 and has guide holes 51, and the number of the guide holes 51 matches the number of the pull wires 2200. After the proximal end of the pull wire 2200 extends from the proximal ends of the insertion portion 20 and the connecting member 40, it sequentially passes through the corresponding guide hole 51 of the guide mechanism 50 and the corresponding threading channel 3012 of the driving assembly 3000, and finally connects with the positioning portion 2100.
Optionally, as shown in fig. 4, a connection hole 2110 is provided on the positioning portion 2100, optionally, the connection hole 2110 may be a hole that is not closed in the circumferential direction, for example, an opening 2111 extending along the axial direction of the connection hole 2110 is formed on a hole wall of the connection hole 2110, so that the cross section of the connection hole 2110 is an opening. As shown in FIG. 5, the pull wire 2200 includes a pull wire body 2210 and a fixing sleeve 2220, the fixing sleeve 2220 being disposed at the proximal end of the pull wire body 2210. The connection hole 2110 may be a tapered hole or a stepped hole, that is, the hole diameters of both ends of the connection hole 2110 are different, and the outer diameter of the fixing sleeve 2220 is slightly smaller than the hole diameter of one end of the connection hole 2110 and larger than the hole diameter of the other end of the connection hole 2110, so that the fixing sleeve 2220 may be disposed in the connection hole 2110 and may not be removed from the connection hole 2110. When the positioning part 2100 and the wire 2200 are assembled, the distal end of the wire body 2210 is first inserted through the coupling hole 2110, and then the wire 2200 is pulled and the fixing sleeve 2220 is inserted into the coupling hole 2110. With such a structure, the connection between the proximal end of the pull wire 2200 and the positioning portion 2100 is simple and convenient, and the fixation sleeve 2220 does not need to be squashed and the large-area welding is also not needed. Alternatively, the connection hole may also be a circumferentially closed hole (i.e., in the cross section of the connection hole 2110, the connection hole is a closed ring).
Further, referring back to fig. 6, each of the thread-guiding slot sets 3010 includes at least two positioning slots 3011, and at least two positioning slots 3011 are arranged at intervals and connected through the thread-guiding channel 3012. The positioning portion 2100 may be selectively disposed in one of the positioning slots 3011. This has the advantage that the positioning portion 2100 can be received by selecting the positioning slot 3011 at a suitable position during assembly of the endoscope or during use, so as to pre-tighten the pull wire 2200 without damaging the pull wire 2200, thereby avoiding the problem of idle running, ensuring the bending control performance of the endoscope, and enabling the endoscope to perform a preset bending action. That is to say, the bending control mechanism 3000 of the embodiment of the present invention also has a function of pre-tightening the pull wire 2200, so that it is not necessary to additionally arrange other structures to pre-tighten the pull wire 2200 alone, and the handle 10 with a small volume can also meet the installation requirements of each component, and the problem of insufficient space is avoided.
Next, a more detailed construction of the bend control mechanism 30 will be described herein, with the endoscope configured with two pull wires 2200 to enable bi-directional bending control of the endoscope. Accordingly, the number of the transmission assembly 2000 and the wire groove set 3010 is two. The above description is used, that is, the two transmission assemblies 2000 are the first transmission assembly 2000a and the second transmission assembly 2000b, respectively, and the two wire slot assemblies 3010 are the first wire slot set 3010a and the second wire slot set 3010b, respectively.
In addition, those skilled in the art will appreciate that the following configuration is merely a preferred implementation of the bend-controlling mechanism 30 and is not an exclusive alternative configuration and should not unduly limit the present invention. And, those skilled in the art can also adapt the following description to accommodate situations where the endoscope is configured with only one pull wire 2200, or with more than three pull wires 2200.
Referring back to fig. 3 in conjunction with fig. 1 and 2, the driving assembly 3000 may specifically include a turntable 3100, a central shaft 3200, and a handle 3300. Wherein the rotary disk 3100 is fitted around the central shaft 3200 and configured to remain stationary with respect to the central shaft 3200, i.e. the rotary disk 3100 is rotatable with the central shaft 3200. One end of the central shaft 3200 is arranged inside the handle 10 and rotatably connected with the base 1000, the other end of the central shaft passes through a through hole (not shown) in the handle 10 and extends to the outside of the handle 10, and the rotary table 3100 is arranged inside the handle 10. The grip 3300 is disposed outside the handle 10, is connected to the other end of the central shaft 3200, and receives an external force and drives the driving assembly 3000 to rotate in the first direction or the second direction.
The wire slot group 3010 is arranged on the rotary table 3100, specifically on an end face of the rotary table 3100 departing from the base 1000. At least two of the positioning slots 3011 of the same slot set 3010 may be spaced in any suitable manner on the rotary table 3100, and in a preferred implementation, all of the positioning slots 3011 of the same slot set 3010 are spaced about the axis of the drive assembly 3000, and are preferably equally spaced. With this configuration, the area of the dial 3100 can be fully utilized to allow a maximum adjustment stroke when the pull wire 2200 is pretensioned. Further preferably, two of the line slot sets 3010 are symmetrically arranged on the rotary table 3100, and the axis of symmetry of the two line slot sets 3010 is L1. That is, the number of the first positioning slots 3011a of the first slot group 3010a is the same as the number of the second positioning slots 3011b of the second slot group 3010b, and all of the first positioning slots 3011a and all of the second positioning slots 3011b are located on the same circumference. When the pull wire 2200 is pre-tightened, the two pull wires can be pre-tightened according to the actual conditions of the first pull wire 2200a and the second pull wire 2200b, so that the optimal bending control effect in different directions can be achieved.
The embodiment of the present invention does not particularly limit the specific shape of the positioning groove 3011, as long as it matches the shape of the positioning portion 2100. Alternatively, the positioning groove 3011 and the positioning portion 2100 are both circular. In addition, the threading channel 3012 is an arcuate slot disposed on an end face of the dial 3100.
With continued reference to fig. 6 in conjunction with fig. 7, the first set of slots 3010a may include three first positioning slots 3011a, and the three first positioning slots 3011a are arranged in a counterclockwise direction. That is, the first, second, and third first positioning slots 3011a are arranged in the counterclockwise direction in sequence. The second slot set 3010b includes three second positioning slots 3011b, the three second positioning slots 3011b are arranged in a clockwise direction, that is, a first positioning slot 3011b, a second positioning slot 3011b and a third positioning slot 3011b are sequentially arranged in the clockwise direction; as such, the first second positioning slot 3011b is adjacent to the first positioning slot 3011a in the circumferential direction. When the endoscope is initially assembled, the first positioning portion 2100a of the first transmission assembly 2000 is typically placed in a first one of the first positioning slots 3011a, and the second positioning portion 2100b of the second transmission assembly 2000 is typically placed in a first one of the second positioning slots 3011 b. As the use time is prolonged, the first pulling wire 2200a and the second pulling wire 2200b become loose, and at this time, the positions of the first positioning portion 2100a and the second positioning portion 2200b may be adjusted, for example, the first positioning portion 2100a may be taken out of the first positioning slot 3011a and put into the second first positioning slot 3011a to tighten the first pulling wire 2200a again, and the second positioning portion 2100b may be taken out of the first second positioning slot 3011b and put into the second positioning slot 3011b to tighten the second pulling wire 2200b again. By doing so, the problem of idle stroke of the endoscope during bending control can be avoided, and the bending control performance of the endoscope is ensured.
Optionally, in this embodiment, a third central angle θ formed between any two adjacent first positioning slots 3011a in the same slot group 30103Is 30 deg., and a fourth central angle theta is formed between a first one of the first detent 3011a of the first set of slots 3010a and a first one of the second detent 3011b of the second set of slots 3010b4Is 60 deg..
Further, referring back to fig. 3, the bending control mechanism 30 includes a first limiting member (not labeled) at least for limiting the positioning portion 2100 in the positioning slot 3011. In this embodiment, the first stop member is further configured to limit the proximal end of the pull wire 2200 in the threading channel 3012.
Optionally, the first retaining member includes an enclosure 4100, and the enclosure 4100 includes a top plate 4110 and a circumferential blocking wall 4120 connected to an edge of the top plate 4110. The top plate 4110 is provided with a mounting through hole (not labeled), the housing 4100 is sleeved on the central shaft 3200 through the mounting through hole, the rotary table 3100 is covered, and the circumferential blocking wall 4120 of the housing 4100 is further detachably connected to the base 1000. The inner surface of the top plate 4110 of the housing 4100 may be configured to press against the end surface of the rotary table 3100 to prevent the positioning portion 2100 from coming out of the positioning slot 3011 and prevent the pull wire 2200 from coming out of the threading channel 3012. It will be understood by those skilled in the art that, when the position of the positioning portion 2100 is adjusted, the cover 4100 needs to be detached from the base 1000, and after the adjustment is completed, the cover 4100 needs to be re-attached to the base 1000.
In order to prevent the positioning portion 2100 from being disengaged from the positioning slot 3011 and reduce the friction between the rotary table 3100 and the housing 4100 during use, the first limiting member preferably further includes a spacer (not shown), such as a nylon spacer, having a thickness of about 1mm, and the spacer is disposed between the top plate 4110 and the rotary table 3100.
Further, the bending control mechanism 30 further includes a second limiting member 5000, and the second limiting member 5000 is used for limiting the maximum rotation angle of the driving assembly 3000. The maximum rotation angle of the driving assembly 3000 is related to the maximum bending angle of the insertion portion 20, for example, in a single direction bending control endoscope, the maximum rotation angle of the driving assembly 3000 may be equal to the maximum bending angle of the insertion portion 20. In the bidirectional bending control endoscope, the maximum rotation angle of the driving unit 3000 may be the sum of the maximum bending angles of the insertion portion 20 bent in two directions, for example, when the maximum bending angle of the insertion portion 20 bent in the first direction is 90 °, and the maximum bending angle of the insertion portion 20 bent in the second direction is 90 °, the maximum rotation angle of the driving unit 3000 may be 180 °.
Optionally, the second limiting member 5000 comprises a limiting memberA sleeve 5100 and a limiting column 5200. The limiting sleeve 5100 is connected to the outer surface of the housing 4100 and is sleeved outside the central shaft 3200. The limiting sleeve 5100 is provided with a limiting groove 5110 extending along the circumferential direction of the central shaft 3200. The limiting column 5200 is connected to the central shaft 3200 and passes through the limiting groove 5110. The limit column 5200 rotates synchronously with the driving component 3000, and in the rotating process, the limit sleeve 5100 keeps static, when the limit column 5200 rotates to abut against the side wall of the limit groove 5110, the side wall of the limit groove 5110 hinders the rotation of the limit column 5200, thereby limiting the rotation of the driving component 3000. That is, the first central angle θ corresponding to the limiting groove 51101The angle (as labeled in fig. 11) is related to the maximum rotational angle of the drive assembly 3000. It is understood that, for bi-directional bending control, and when the maximum bending angles of the insertion portion 20 in two directions are equal, the first central angle θ is equal to the first central angle θ in the axial projection of the bending control mechanism 301And the angle bisector of1Collinear, and when the limit column 5200 is located at the first central angle θ1Is in a straightened state when the angle bisector of (a) is above.
For the same endoscope, the maximum bending angle of the insertion portion 20, i.e., the maximum rotation angle of the driving assembly 3000, may be different when applied to different surgical scenarios. If the maximum rotation angle is limited only by the limiting groove 5110, the requirements of different use scenes cannot be met. In view of this, please refer to fig. 3 with reference to fig. 11, the second limiting member 5000 further includes an adjusting component 5300, and the adjusting component 5300 is used for adjusting the maximum rotation angle of the driving component 3000. Specifically, the adjusting assembly 5300 includes an adjusting plate 5310 and a first locking member 5320, the number of the adjusting plates 5310 is two, and each of the adjusting plates 5310 has a limiting surface 5311. The first locking member 5320 is used to selectively lock or unlock the adjustment plate 5310 and the housing 4100. When the first locking member is engaged5320 when the adjusting plate 5310 and the housing 4100 are locked, the adjusting plate 5310 and the housing 4100 are kept stationary, and the limiting surfaces 5311 of the two adjusting plates 5310 are arranged opposite to each other, extend along the radial direction of the central axis 3200, and correspond to a second central angle θ2. The second central angle theta2At the first central angle theta1And the second central angle theta2Angle theta with said first centre of circle1With the same angle bisector. Here, when the driving component 3000 rotates and drives the limit column 5200 to rotate to abut against any one of the limit surfaces 5311, the limit surface 5311 obstructs the rotation of the driving component 3000, so as to limit the rotation angle, in other words, in the presence of the adjusting component 5000, the maximum rotation angle of the driving component 3000 and the second central angle θ2Is related to. When the first locker 5320 unlocks the adjustment plates 5310 and the housing 4100 (i.e., the first locker 5320 no longer locks the adjustment plates 5310 and the housing 4100), a user can adjust the positions of the two adjustment plates 5311 on the housing 4100 to adjust the second central angle θ2And thus the maximum rotation angle of the driving assembly 3000.
Optionally, please refer to fig. 11 with emphasis, a threaded hole 4111 is formed in the top plate 4110 of the housing 4100, an arc-shaped adjusting groove 5312 is formed in the adjusting plate 5310, and the adjusting groove 5312 extends along the circumferential direction of the central shaft 3200. The first fastening member 5312 includes a screw passing through the adjustment groove 5312 and threadedly coupled with the threaded hole 4111. When the screw is tightened so that the head of the screw is pressed against the adjustment plate 5310, the screw locks the adjustment plate 5310 and the housing 4100. When the screw is loosened so that the adjustment plate 5310 can move on the housing 4100 under the restriction of the adjustment groove 5310 and the screw, the screw releases the locking of the adjustment plate 5310 and the housing 4100.
Preferably, each of the adjusting plates 5310 is locked to the housing 4100 by two screws, andtwo screws are arranged at intervals in the circumferential direction of the central shaft 3200 such that the adjusting plate 5310 can move in the circumferential direction of the central shaft 3200 under the restriction of the two screws to adjust the second central angle θ2The angle of (c).
Here, it should be noted that, when the endoscope is controlled to bend unidirectionally, the number of the adjusting plates may be one.
In addition, the bend-controlling mechanism 3000 may further include a second locking member (not shown) for selectively locking or unlocking the driving assembly 3000 and the base 1000. In assembling the endoscope (both during initial assembly of the endoscope and during adjustment of the position of positioning portion 2100 after a period of use), the second retaining member may be used to lock drive assembly 3000 and base 1000 to prevent rotation of drive assembly 3000 relative to base 1000 for ease of assembly. After assembly is complete, the second locking member is unlocked from the drive assembly 3000 and the base 1000, allowing the drive assembly 3000 to rotate under external forces to control the bending of the insertion portion 20. The second locking member may be a pin, and correspondingly, the base 1000 is provided with a first locking hole (not shown in the figure), the rotary table 3100 of the driving assembly 3000 is provided with a second locking hole 3110, and the second locking hole 3110 can be communicated with the first locking hole for penetrating the pin. Preferably, when the second locking member locks the driving assembly 3000 and the base 1000, the limiting column 5200 is located at the first central angle θ on the axial projection of the bending control mechanism 30001When both of the pull wires 2200 are tightened, the insertion portion 20 is in a straightened state.
Further, the embodiment of the present invention further provides a bending control mechanism, which is the bending control mechanism 30.
Still further, the present invention provides a handle assembly, which comprises the handle 10 and the bending control mechanism 30.
Furthermore, an embodiment of the present invention further provides an endoscope system, which includes the endoscope, an image processor and a display, where the image processor is in communication connection with the endoscope and the display, respectively, and is configured to perform signal processing on image information acquired by the endoscope, and send the image information to the display for displaying.
Although the present invention is disclosed above, it is not limited thereto. Various modifications and alterations of this invention may be made by those skilled in the art without departing from the spirit and scope of this invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (15)
1. A bend-controlling mechanism, comprising:
a base;
the driving assembly is rotatably connected to the base and provided with at least one wire groove group, the wire groove group comprises a positioning groove and a threading channel which are mutually communicated, and the threading channel is used for threading a pull wire; and the number of the first and second groups,
the transmission assembly comprises at least one positioning part, the positioning part is accommodated in one positioning groove, and the positioning part is connected with the pull wire; the positioning part tightens or releases the pull wire along with the rotation of the driving assembly.
2. The bend-controlling mechanism according to claim 1, wherein said set of wire slots includes at least two positioning slots, at least two of said positioning slots being spaced apart and communicating through said threading channel; the positioning part is selectively arranged in one positioning groove.
3. The bend-controlling mechanism of claim 2, wherein at least two of said positioning slots are arranged about an axis of said drive assembly.
4. The bend-controlling mechanism according to claim 3, wherein said driving assembly is provided with two said wire groove sets, and said two wire groove sets are symmetrically arranged; the number of the positioning parts is two, and each positioning part is arranged in the positioning groove of one wire groove group.
5. The bend-controlling mechanism according to any one of claims 1-4, wherein said driving assembly comprises a central shaft and a turntable, said central shaft is rotatably connected to said base, said turntable is sleeved on said central shaft and configured to rotate synchronously with said central shaft, and said set of thread slots is provided on said turntable.
6. The bend-controlling mechanism according to claim 5, further comprising a housing, wherein the housing is sleeved on the central shaft and covers the turntable; and a gasket is arranged between the housing and the turntable.
7. The bend-controlling mechanism of claim 6, further comprising a limit stop; the limiting piece comprises a limiting sleeve and a limiting column, the limiting sleeve is connected to the outer surface of the housing and sleeved on the central shaft, and a limiting groove extending along the circumferential direction of the central shaft is formed in the limiting sleeve; the limiting column penetrates through the limiting groove and is detachably connected to the central shaft; the limiting column can rotate in the limiting groove along with the rotation of the central shaft.
8. The bend-controlling mechanism according to claim 7, wherein the limiting member further comprises an adjusting assembly, the adjusting assembly comprising an adjusting plate and a first locking member; the number of the adjusting plates is two, each adjusting plate is provided with a limiting surface, and the limiting surfaces of the two adjusting plates are arranged oppositely; the first locking piece can selectively lock or unlock the adjusting plate and the cover shell, and when the first locking piece is unlocked, the angle formed by the two limiting surfaces can be adjusted.
9. The bending control mechanism according to claim 8, wherein the housing is provided with a threaded hole, and the adjusting plate is provided with an arc-shaped adjusting groove extending along the circumferential direction of the central shaft; the first locking member includes a screw that passes through the adjustment slot and is threadedly coupled with the threaded bore.
10. The bend-controlling mechanism according to claim 9, wherein each of said adjustment plates is locked to said housing by at least two of said screws, and wherein at least two of said screws are arranged circumferentially about said central axis.
11. The bending control mechanism according to any one of claims 1 to 4, wherein the positioning part is provided with a connecting hole, and the aperture of one end of the connecting hole is smaller than that of the other end; the pull wire comprises a pull wire body and a fixed sleeve arranged at the near end of the pull wire body, the fixed sleeve is arranged in the connecting hole, and the outer diameter of the fixed sleeve is larger than the aperture of one end of the connecting hole.
12. A handle assembly comprising a handle and a bend-controlling mechanism as claimed in any one of claims 1 to 11, the base being attached to the handle.
13. The handle assembly of claim 12, wherein the handle comprises a first portion and a second portion connected at an angle, the angle formed between the first portion and the second portion is between 90 ° and 150 °, and the base of the bend-controlling mechanism is disposed at the junction of the first portion and the second portion.
14. An endoscope comprising a handle assembly according to claim 12 or 13 and an insertion portion connected to a distal end of the handle, the pull wire being connected to the insertion portion.
15. An endoscopic system comprising the endoscope of claim 14, an image processor, and a display; the endoscope is communicatively coupled to the image processor, which is communicatively coupled to the display.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122626266.5U CN216256998U (en) | 2021-10-29 | 2021-10-29 | Bending control mechanism, handle assembly, endoscope and endoscope system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122626266.5U CN216256998U (en) | 2021-10-29 | 2021-10-29 | Bending control mechanism, handle assembly, endoscope and endoscope system |
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| CN216256998U true CN216256998U (en) | 2022-04-12 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114795069A (en) * | 2022-05-25 | 2022-07-29 | 湖南省华芯医疗器械有限公司 | Disposable section of endoscope handle, endoscope handle and endoscope |
| CN114795070A (en) * | 2022-05-25 | 2022-07-29 | 湖南省华芯医疗器械有限公司 | Reusable section of endoscope handle, endoscope handle and endoscope |
| CN114869201A (en) * | 2022-05-25 | 2022-08-09 | 湖南省华芯医疗器械有限公司 | Reuse section of endoscope handle, endoscope handle and endoscope |
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2021
- 2021-10-29 CN CN202122626266.5U patent/CN216256998U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114795069A (en) * | 2022-05-25 | 2022-07-29 | 湖南省华芯医疗器械有限公司 | Disposable section of endoscope handle, endoscope handle and endoscope |
| CN114795070A (en) * | 2022-05-25 | 2022-07-29 | 湖南省华芯医疗器械有限公司 | Reusable section of endoscope handle, endoscope handle and endoscope |
| CN114869201A (en) * | 2022-05-25 | 2022-08-09 | 湖南省华芯医疗器械有限公司 | Reuse section of endoscope handle, endoscope handle and endoscope |
| CN114795070B (en) * | 2022-05-25 | 2023-06-23 | 湖南省华芯医疗器械有限公司 | Reusable section of endoscope handle, endoscope handle and endoscope |
| WO2023226538A1 (en) * | 2022-05-25 | 2023-11-30 | 湖南省华芯医疗器械有限公司 | Reusable section of endoscope handle, endoscope handle, and endoscope |
| WO2023226536A1 (en) * | 2022-05-25 | 2023-11-30 | 湖南省华芯医疗器械有限公司 | Disposable section of endoscope handle, endoscope handle, and endoscope |
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